a set of matching jewelry once very popular in France.
Wikipedia: Cleverly, the parure was not static but modular and could be remade into more fashionable jewelry in order to stay au courant in the court and fashion-forward for the times. Members of court and higher social ranks vied for the best jewelers to create the most imaginative and elaborate collections that would astound one another and increase their status. Some necklaces could be worn intact or temporarily disassembled into bracelets, pendants, hair ornaments or brooches with smart interchangeable components and locking systems.
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A few steps from Emma a gentleman in a blue coat was talking of Italy with a pale young woman wearing a parure of pearls.
Gustave Flaubert. Madame Bovary
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Pekins, damasks, lampas, painted moires, robes of shot gros de Tours, India kerchiefs embroidered in gold that could be washed, dauphines without a right or wrong side, in the piece, Genoa and Alencon point lace, parures in antique goldsmith's work, ivory bon-bon boxes ornamented with microscopic battles, gewgaws and ribbons— he lavished everything on Cosette.